<template>
  <div>
    <!-- 面包屑导航区 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>权限管理</el-breadcrumb-item>
      <el-breadcrumb-item>权限列表</el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 卡片视图 -->
    <el-card>
      <!--添加角色按钮区域  -->
      <el-row>
        <el-col>
          <el-button type="primary" @click="addRoleVisible = true"
            >添加角色</el-button
          >
        </el-col>
      </el-row>
      <!-- 角色列表区域 -->
      <el-table :data="rolelist" border stripe>
        <!-- 展开列 -->
        <el-table-column type="expand">
          <template slot-scope="scope">
            <el-row
              :class="['bdbottom', i1 === 0 ? 'bdtop' : '', 'vcenter']"
              v-for="(item1, i1) in scope.row.children"
              :key="item1.id"
            >
              <!-- 渲染一级权限 -->
              <el-col :span="5">
                <el-tag
                  closable
                  @close="removeRightById(scope.row, item1.id)"
                  >{{ item1.authName }}</el-tag
                >
                <i class="el-icon-caret-right"></i>
              </el-col>
              <!-- 渲染二、三级权限 -->
              <el-col :span="19">
                <!-- 通过for循环嵌套渲染二级权限 -->
                <el-row
                  :class="[i2 === 0 ? '' : 'bdtop', 'vcenter']"
                  v-for="(item2, i2) in item1.children"
                  :key="item2.id"
                >
                  <el-col :span="6">
                    <el-tag
                      type="success"
                      closable
                      @close="removeRightById(scope.row, item2.id)"
                      >{{ item2.authName }}</el-tag
                    >
                    <i class="el-icon-caret-right"></i>
                  </el-col>
                  <el-col :span="18">
                    <el-tag
                      type="warning"
                      v-for="(item3, i3) in item2.children"
                      :key="item3.id"
                      closable
                      @close="removeRightById(scope.row, item3.id)"
                    >
                      {{ item3.authName }}
                    </el-tag>
                  </el-col>
                </el-row>
              </el-col>
            </el-row>
            <!-- <pre>
               {{scope.row}}
            </pre> -->
          </template>
        </el-table-column>
        <!-- 索引列 -->
        <el-table-column type="index"></el-table-column>
        <el-table-column label="角色名称" prop="roleName"></el-table-column>
        <el-table-column label="角色描述" prop="roleDesc"></el-table-column>
        <el-table-column label="操作" width="300px">
          <template slot-scope="scope">
            <el-button
              size="mini"
              type="primary"
              icon="el-icon-edit"
              @click="showEditRole(scope.row.id)"
              >编辑</el-button
            >
            <el-button
              size="mini"
              type="danger"
              icon="el-icon-delete"
              @click="removeUserById(scope.row.id)"
              >删除</el-button
            >
            <el-button
              size="mini"
              type="warning"
              icon="el-icon-setting"
              @click="showSetRightDialog(scope.row)"
              >分配权限</el-button
            >
          </template>
        </el-table-column>
      </el-table>
    </el-card>

    <!-- 添加角色 -->
    <el-dialog
      title="添加用户"
      :visible.sync="addRoleVisible"
      width="50%"
      @close="addRoleClosed"
    >
      <!-- 内容主题区域 -->
      <!-- :model数据绑定和对象 :rules:验证规则对象 :ref引用对象 label-width:前面文本所占的宽度-->
      <el-form
        :model="addForm"
        :rules="addFormRules"
        ref="addFormRef"
        label-width="70px"
      >
        <el-form-item label="角色名称" prop="roleName" label-width="100px">
          <el-input v-model="addForm.roleName"></el-input>
        </el-form-item>

        <el-form-item label="角色描述" prop="roleDesc" label-width="100px">
          <el-input v-model="addForm.roleDesc"></el-input>
        </el-form-item>
      </el-form>
      <!-- 底部区域 -->
      <span slot="footer" class="dialog-footer">
        <el-button @click="addRoleVisible = false">取 消</el-button>
        <el-button type="primary" @click="addUSer">确 定</el-button>
      </span>
    </el-dialog>
    <!-- 编辑角色 -->
    <el-dialog
      title="修改角色"
      :visible.sync="editRoleVisible"
      width="50%"
      @close="editRoleClosed"
    >
      <el-form
        :model="editForm"
        :rules="editFormRules"
        ref="editFormRef"
        label-width="70px"
      >
        <el-form-item label="角色名称" prop="roleName" label-width="100px">
          <el-input v-model="editForm.roleName"></el-input>
        </el-form-item>
        <el-form-item label="角色描述" prop="roleDesc" label-width="100px">
          <el-input v-model="editForm.roleDesc"></el-input>
        </el-form-item>
      </el-form>

      <span slot="footer" class="dialog-footer">
        <el-button @click="editRoleVisible = false">取 消</el-button>
        <el-button type="primary" @click="editUserInfo">确 定</el-button>
      </span>
    </el-dialog>

    <!-- 分配权限的对话框 -->
    <el-dialog
      title="分配权限"
      :visible.sync="setRightDialogVisible"
      width="50%"
      @close="setRightDialogClosed"
    >
    <!-- 树形控件 -->
<el-tree :data="rightslist" :props="treeProps" ref='treeRef'
show-checkbox node-key="id" default-expand-all :default-checked-keys="defKeys"></el-tree>
      <span slot="footer" class="dialog-footer">
        <el-button @click="setRightDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="allotRights"
          >确 定</el-button
        >
      </span>
    </el-dialog>
  </div>
</template>

<script>
export default {
  data() {
    return {
      //所有角色列表数据
      rolelist: [],
      //控制分配权限对话框的显示与隐藏
      setRightDialogVisible : false,
      //所有权限的数据
      rightslist:[],
      //树形控件的属性绑定对象
      treeProps:{
        label:'authName',
        children:'children'
      },
      //默认选中的节点Id值数组
      defKeys:[],
      //当前即将分配权限的角色id
      roleId:'',
      addRoleVisible: false,
      addForm: {
        roleName: "",
        roleDesc: "",
      },
      addFormRules: {
        roleName: [
          {
            required: true,
            message: "请输入角色名称",
            trigger: "blur",
          },
        ],
        roleDesc: [
          {
            trigger: "blur",
          },
        ],
      },
      //控制修改用户对话框的显示与隐藏
      editRoleVisible: false,
      //查询到的用户信息对象
      editForm: {},
      //修改表单的验证规则对象
      editFormRules: {
        roleName: [
          {
            required: true,
            message: "请输入角色名称",
            trigger: "blur",
          },
        ],
        roleDesc: [
          {
            trigger: "blur",
          },
        ],
      },
    };
  },
  created() {
    this.getRolesList();
  },
  methods: {
    //获取所有角色的列表
    async getRolesList() {
      const { data: res } = await this.$http.get("roles");
      if (res.meta.status !== 200) {
        return this.$message.error("获取角色信息失败！");
      }
      this.rolelist = res.data;
      console.log(this.rolelist);
    },
    addUSer() {
      this.$refs.addFormRef.validate(async (valid) => {
        if (!valid) return;
        //可以发起添加用户的网络请求
        const { data: res } = await this.$http.post("roles", this.addForm);
        if (res.meta.status !== 201) {
          this.$message.error("添加用户失败！");
        }
        this.$message.success("添加用户成功！");
        //隐藏添加用户的对话框
        this.addRoleVisible = false;
        //重新获取用户列表数据
        this.getRolesList();
      });
    },

    addRoleClosed() {
      this.$refs.addFormRef.resetFields();
    },
    async removeUserById(id) {
      //弹框询问用户是否删除数据
      const confirmResult = await this.$confirm(
        "此操作将永久删除该用户, 是否继续?",
        "提示",
        {
          confirmButtonText: "确定",
          cancelButtonText: "取消",
          type: "warning",
        }
      ).catch((err) => err);
      //如果用户确认删除，则返回值为字符串 confirm 取消则为cancel
      // console.log(confirmResult)
      if (confirmResult !== "confirm") {
        return this.$message.info("已取消删除");
      }
      const { data: res } = await this.$http.delete("roles/" + id);
      if (res.meta.status !== 200) {
        return this.$message.error("删除角色失败！");
      }
      this.$message.success("删除角色成功！");
      this.getRolesList();
    },
    async showEditRole(id) {
      // console.log(id)
      const { data: res } = await this.$http.get("roles/" + id);
      // console.log(res)
      if (res.meta.status !== 200) {
        return this.$message.error("查询用户信息失败！");
      }
      this.editForm = res.data;
      this.editRoleVisible = true;
    },
    //监听修改用户对话框的关闭事件
    editRoleClosed() {
      this.$refs.editFormRef.resetFields();
    },
    //修改用户信息并提交
    editUserInfo() {
      this.$refs.editFormRef.validate(async (valid) => {
        if (!valid) return;
        //发起修改用户信息的数据请求
        const { data: res } = await this.$http.put(
          "roles/" + this.editForm.roleId,
          {
            roleName: this.editForm.roleName,
            roleDesc: this.editForm.roleDesc,
          }
        );

        if (res.meta.status !== 200) {
          console.log(this.editForm);
          return this.$message.error("更新用户信息失败！");
        }
        //关闭对话框
        this.editRoleVisible = false;
        //刷新数据列表
        this.getRolesList();
        //提示修改成功
        this.$message.success("更新用户信息成功！");
      });
    },
    //根据Id删除对应的权限
    async removeRightById(role, rightId) {
      //弹框提示用户是否要删除
      const confirmResult = await this.$confirm(
        "此操作将永久删除该文件, 是否继续?",
        "提示",
        {
          confirmButtonText: "确定",
          cancelButtonText: "取消",
          type: "warning",
        }
      ).catch((err) => err);

      if (confirmResult !== "confirm") {
        return this.$message.info("取消了删除！");
      }
      const { data: res } = await this.$http.delete(
        `roles/${role.id}/rights/${rightId}`
      );
      if (res.meta.status !== 200) {
        return this.$message.error("删除权限失败！");
      }
      //删除成功则重新刷新列表
      // this.getRolesList();
      role.children = res.data;
    },
    //展示分配权限的对话框
    async showSetRightDialog(role) {
      this.roleId = role.id;
      //获取所有权限的数据
      const {data: res} = await this.$http.get('rights/tree')
      if(res.meta.status !== 200){
        return this.$message.error('获取权限数据失败！');
      }
      //把获取到的权限数据保存到data中
      this.rightslist = res.data;
      console.log(this.rightslist)
      //递归获取三级节点的id
      this.getLeafKeys(role,this.defKeys);
      this.setRightDialogVisible = true
    },
    //通过递归的形式，获取角色下所有三级权限的id,并保存到defKeys数组中
    getLeafKeys(node,arr){
      //如果当前node节点不包含children属性，则是三级节点
      if(!node.children){
        return arr.push(node.id)
      }
      //如果不是三级节点，则递归到三级节点
      node.children.forEach(item => this.getLeafKeys(item,arr))
    },
    //监听分配权限对话框的关闭事件
    setRightDialogClosed(){
      this.defKeys = [];
    },
    //点击为角色分配权限
    async allotRights(){
      const keys = [
      ...this.$refs.treeRef.getCheckedKeys(),//全选
      ...this.$refs.treeRef.getHalfCheckedKeys()//半选     
      ];
      const idStr = keys.join(',');
      const {data: res} = await this.$http.post(`roles/${this.roleId}/rights`,{rids:idStr})

      if(res.meta.status !== 200){
        return this.$message.error('分配权限失败！');
      }
      this.$message.success('分配权限成功！');
      this.getRolesList();
      this.setRightDialogVisible = false;
    }
  },
};
</script>

<style>
.el-tag {
  margin: 7px;
}
.bdtop {
  border-top: 1px solid #eee;
}
.bdbottom {
  border-bottom: 1px solid #eee;
}
.vcenter {
  display: flex;
  align-items: center;
}
</style>